knock-out 

when having sex, you go for at least three rounds that are at least 30 minutes long and you don't cum until the the third or later round

round one=no cum, round two=no cum, round three=cum and KNOCK-OUT

knock-out by Wizzard the Juggalo December 11, 2010

knock-out 

To steal.

1. "Tonight I'm going to go knock-out a set of Acura Type-R rims for my Civic HF".

knock-out by Sim-Dum Gweye September 23, 2003

knock out 

to go to sleep. mainly said in reference to a full nights rest, 7 or more hours.

hey man, i'm about to knock out. laters.

knock out by noooooooooope June 10, 2009

knock out 

(Informal Noun) a person or thing that is overwhelmingly attractive.

Svetlana knew how to dress to perfectly complement her tall, athletic frame. By virtue of her bright eyes, silky long hair, and a smile that could stop a revolution, people widely regard her as a knock out.

knock out by JigHexadecimal September 2, 2007

Knock Out 

A sexy transformer who likes the way he looks in steel-belted radials. He attempted to join the Autobots in the television series Transformers - Prime on the last episode only to be rejected, but in the movie he was accepted. Knock Out is very concerned about keeping his finish clean and his paint looking fabulous.

Knock Out is not only an automobile, but an automobile enthusiast.

Knock Out by carryingthebanner October 23, 2017

Knock out 

To go to sleep.

I'm so tired so I'm gonna knock out!

Knock out by Blabbermouth June 23, 2014

Knock out 

What happens to anybody who steps up to Kash!

Two hits He hits you, you hit the floor. Knock out!

Knock out by Homies 2 December 23, 2008